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FE Power Forums => FE Technical Forum => Topic started by: petew on July 05, 2026, 11:45:38 AM

Title: Camshaft Bolt
Post by: petew on July 05, 2026, 11:45:38 AM

Went to put the cam gear on my Comp hydraulic roller cam so I can degree it and found that the thread in the camshaft is 7/16 -20 not the standard 7/16 -14 .
So is there a specific ARP bolt that will work for this or is a grade 8 bolt sufficient ?

Title: Re: Camshaft Bolt
Post by: frnkeore on July 05, 2026, 12:23:32 PM

I doesn't even have to be a grade 8 bolt. A grade 5 will work just fine, especially with the extra clamping force of the 20 pitch thread.

Title: Re: Camshaft Bolt
Post by: blykins on July 05, 2026, 01:04:56 PM

Quote from: petew on July 05, 2026, 11:45:38 AM

Went to put the cam gear on my Comp hydraulic roller cam so I can degree it and found that the thread in the camshaft is 7/16 -20 not the standard 7/16 -14 .
So is there a specific ARP bolt that will work for this or is a grade 8 bolt sufficient ?

Take a measurement of the length that you need.  Depending on your setup, it may be 1.5" UHL or 1.750".  Will depend on if you have a pump eccentric, thick washer, etc.

Yes, ARP has 7/16-20 bolts in either length.  With a steel core roller cam, I like to torque them at 65-70 lb-ft.